Another related literature studies adaptive experimentation with a focus on treatment effect estimation. A landmark work in this innovation in this area is the biased coin design of [1]}. We refer the reader to [2]}, [3]}, [4]} for recent reviews in the literature, each offering a distinct perspective. These papers focus on minimizing the variance of estimators. Our focus is on the quality of the final decision, allowing our methods to gather few measurements of some inferior arms.
